1. PS blending

PS/LDPE blend modified materials:

Formula composition quality fraction

Resin PS 100

Compatibilizer HPB-g-PS 10

LDPE 20

Process control:

PS is stirred at a certain temperature for 5 minutes in a high-speed mixer, with an extrusion temperature of 160-165 ℃.

Material properties:

Tensile strength 20.8~23.6MPa

Elongation at break 4.5% to 5.8%

Impact strength 12.5-14.3 J/m

2. Flame retardant reinforced toughened PS/PBT blend material

Formula composition quality fraction

Resin PS 43

Reinforcing agent glass fiber (10-20 μ m) 11

PBT (L2100) 16

Flame retardant tris (tri bromophenyl) cyanurate (FR245) 11

Composite toughening agent 10

Antidrip agent styrene acrylonitrile resin coated polytetrafluoroethylene (SN3300) 0.8

Antioxidant (Ultraanox626) 0.2

Compatibilizer styrene maleic anhydride copolymer (SMA218) 8

Process control:

The L/D of the extruder is 40, and the temperature of the extruder barrel is 180-190 ℃ in zone one, 200-210 ℃ in zone two, and 220-230 ℃ in zone three; Head temperature 210 ℃; The screw speed is 350-450r/min.

Material properties:

Tensile strength 112MPa

Bending strength 167MPa

Vertical combustion UL-94 V-0 level

This material has excellent strength and toughness, as well as good flame retardancy, and has broad application prospects in fields such as electronic and electrical equipment.

3. PS foaming

PS Microfoam Woody Plastic:

Formula composition quality fraction

Resin PS 100

Nucleating agent CaCO3 2.5

Foaming agent AC 0.7

Lubricant HSt 0.4

Crosslinking agent DCP 0.15

Pigment Brown Purple 1-2

Regulating agent ethanolamine 0.1

Process control:

PS is mixed and stirred in a high-speed mixer for 5-10 minutes, with a mixing temperature of 100-110 ℃. Low temperature extrusion is recommended for the second extrusion foaming, and the temperature of each section of the material barrel is controlled within the range of 100-185 ℃; The screw speed is 40-50r/min.

Material properties:

Density 0.1-0.4 g/cm3

PS micro foamed imitation wood board, its appearance and inner quality are similar to wood, and the material can be nailed, sawed, or planed. The surface is smooth, lightweight, and has a certain degree of rigidity.

4. Low foaming HIPS plastic paper

Formula composition quality fraction

Resin HIPS 100

Nucleating agent CaCO3 2.5

Foaming agent EVA foaming masterbatch 2-3

Lubricant HSt 0.2

Crosslinking agent DCP 0.2

Process control:

Extruder L/D is 25; Temperature of each section of the material barrel: 100-120 ℃ in Zone 1, 130-145 ℃ in Zone 2, 115-130 ℃ in Zone 3; The temperature of the machine head is 90-130 ℃.

Material properties:

The products extruded using EVA foaming masterbatch as foaming agent have uniform foam pores, good surface gloss, low density, and good mechanical properties. They are widely used in promotional paper, food trays, boxes, and their products.

5. PS flame retardant

Universal grade PS flame retardant modification:

Formula composition quality fraction

Resin PS 100

Flame retardant bis (dibromopropyl) phosphate ester 3

Toughening agent polybutadiene rubber 8

Sb2O3 3

Process control:

Extruder L/D ≥ 28, barrel temperature controlled at 170-200 ℃, screw speed 80-100r/min.

Material properties:

Oxygen index ≥ 26%

Combustion performance UL-94 V-0 level

Tensile strength 22-26MPa

Bending strength 34-38MPa

Elongation at break 1.8% to 2.1%

Impact strength 11-15kJ/m2

Hot deformation temperature (1.82MPa) 89~100 ℃

6. Halogen-free flame retardant modified HIPS

Formula composition quality fraction

Resin HIPS 100

Coupling agent KR-212 0.5

Flame retardant Al (OH) 3 50

Toughening agent SEBS 5

Mg (OH) 2 10

Lubricant HSt 0.5

Coated Red Phosphorus 3

Process control:

Stir PS for 5-10 minutes, then put it into a twin-screw extruder for melting and extrusion. The extruder screw L/D is ≥ 25, the extrusion temperature is 170-200 ℃, and the screw speed is 100-140 r/min.

Material properties:

Oxygen index 27% to 29%

The combustion performance is self extinguishing UL-94 V-0 level

Tensile strength 38-42MPa

Bending strength 50-60MPa

Elongation at break 1.0% to 2.0%

The notch impact strength is (23 ℃) 45-55 J/m

Hot deformation temperature (under a load of 1.82MPa) 100-110 ℃